Amoving company charges $800 plus $16 per hour. another moving company charges $720 plus $21 per hour. how kind is a job that costs the same no matter which company is used?

Add or subtract polynomial : –12qr? +13rq?

Find the difference (8ab+a+2) - (3ab+6)

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?